Hot top with integral-brick lining



July 16, 1929; w. H. RAMAGE 1,721,033

HOT TOP WITH INTEGRAL BRICK LINING Filed May 11, 1927 5 Sheets-Sheet lENTOR a aye a [WY P A RNEY 3 Sheets-Sheet 2 w. H. RAMAGE HOT TOP WITHINTEGRAL BRICK LINING Filed May 11, 1927 July 16, 1929.

July 16, 1929.

w. HJRAMAGE HOT TOP WITH INTEGRAL snzcx mums Filed May 11, 1927 3Sheets-Sheet 3 IQJVENTOR fillzam laz 15m: ye

? A T RNEY Patented July 16, 1929.

WILLIAM HAIG RAMAGE, OF

GIRARD, OHIO, ASSIGNOR '10 VALLEY MOULD AND IRON CORPORATION, OFSHARPSVIL LE, PENNSYLVANIA, A CORPORATION OF NEW YORK.

HOT TOP WITH INTEGRAL-BRICK LINING.

Application filed May 11,

The present invention relates broadly to 'metallurgv and more speciallyto hot tops for j ingot mol s.

- Heretofore in the art, hot tops have been of 5 two general types, onecomprising a metal casing in which bricks are set to comprise the heatinsulating material, and this type of hot top is adapted to have severalpours of steel. The other type of hot top in general use com prises ahollow tile such as is used for large chimneys'of residences, etc., andin this type .the tile is unsupported and unprotected and is broken foreach pour; that 1s, each ingot uses up one of these tile type of hottops.

The present invention comprises the utili- ,zation of anintegral'one-piece hollow brick supported by a metal casing or frame-insuch manner as to permit the assembly to be securely fastened to aningot mold and with the integral brick so protected and supported by thecasing that the hot top will withstand several pours before requiring anew brick.

While the drawings. disclose a few preferred forms of the invention, itis realized that the invention may be embodied-in constructions otherthan those disclosed and therefore lhejisclosure is to be understood asillustrative and not in the limiting sense.

Fig.1 illustrates a form of the invention-in section comprising anintegral hollow brick within a metal casing and with'the assemblylockedupon an ingot mold.

Fig. 2 is a perspective view of the form shown in Fig. 1 with a portionof the casing broken away to illustrate the cement locking rings. Fig. 3is a perspective view of another form of the invention comprising askeleton metal shell supporting the hollow brick.

Fig. 4 is a sectional view of the hot top shown in Fi 3 showing a frament of the upper end 0 an ingot mold with in position.

Fig. 5 is a sectional view through aformof the invention in which theintegral brick extends into' the ingot mold.

- Fig. 6 is a sectional vidv' of the invention.

* similar to that shown in Fig. 5 with the exception that the casingrests upon the top of the ingot mold.

Fig. 7 1s a sectional view of a form of the invention comprisin g asupporting shell and a thehot top 192?. Serial No. 190,407.

removable base plate adapted to retain the integralhollow brick withinthe shell.

Referring to the drawings and more specially to Figs. "1 and 2, the hottop comprises an integral hollow brick 1 which is made up and burned asan article of manufacture. Preferably, though not necessarily, thisbrick is provided with circumferential grooves 2 which form recesses forsupporting a bindin material or cement. Preferably the opening 4 in thehollow brick 1 is inclined upwardly and inwardly in order to providesuitable draft that an ingot'may be stripped 'therefrom.-without bindingor breaking the brick. Preferably the outside of the brick isals'oinclined in the same direction. A metal casing 5 of cast ironorthelike is provided with an internal opening adapted to cooperate with theexternal shape of the hollow brick so that when the casing is telescopedover the brick the two form a sufiiciently accuratebond to obviateplacing any injurious or undue stress on any localized part of thehollow brick, and with the casin coming to rest on the brick in suchmanner t iat the casing does not go down the full length of the brick sothat the brick will not make an intermediate contact with the upper endof the ingot mold 6. Preferably, though not necessarily, the casing 5 islikewise provided on its interior surface with circumferential grooves 7which are so located as to be substantially opposite the grooves '2 inthe brick when the casin is in position on the brick. Prior to assem lyof filled with suitablecement and a very thin layer of cement may'alsobelaid over the exterior surface of the brick. When the easing istelescoped over the brick the fresh cement in the grooves in the casingunites with the fresh'cement in the grooves in the brick so that whenthe cement is hardened,

circumferential keys of hardened cement fill these adjacent groovag andsecurely lock the brick withirigthe 'ci img'.

In Figs. 3 and 4 the form' of the invention comprises an integral hollowbrick 1Ov which is supported and surrounded -by a skeleton shel Thisshell 11 preferably comprises cut-out sheet metal shaped to fit theexterior of the integral brick. The shell may comprise two identicalparts 12 and 14, each of which are provided with top flan es 15 and withside flanges 16 which are a apted to be held together by bolts 17. Inthis form the bolts may be so tightened that cement may not be necessaryto hold the frame and brick together However, where there is a tendencyof the frame to become loosened this tendency may be overcome byutilizing cement to hold the frame in place on the brick.

Fig. 5 illustrates a form of the invention similar to Fig. 1 with theexception that the hollow integral brick 20 is provided with a shoulder21 adapted to sit on the top of the ingot mold 22 and the brick has anextension 24 which extends a slight distance into the mouth of the ingotmold. The casing 25 and the cement keys 26 illustrated in Fig. 5 aresubstantially the same as shown in Figs. 1 and 2.

In Fig. 6 the construction illustrated comprises a hollow brick 30 whichextends into the ingot mold 31 and which is supported and protected by acast metal casing 32 that is provided with a bottom flange 34 adapted tosit upon and form a metal to metal joint with the flat surface 35 on thetop of the ingot mold 31. This hollow brick may likewise be held withinthe casing by cement keys 36.

Fig. 7 illustrates an integral hollow brick which fits within anintegral casing 41 that is provided with lugs 42 adjacent the lower edgethereof. A removable flange 44 bears against the lower end of the hollowbrick 40 and may be secured to the casing 41 by means of bolts 45passing through the flange and cooperating with the lugs 42. In thisconstruction the flange'44 is adapted to form a tight metal to metaljoint with the top surface 46 of the ingot mold 47 In Figs. 1 and 2 thehot top is shown as being held in position on the ingot mold by means ofthe stirrup members 50 which pass under the lugs 51 on the ingot mold 6and are attached to the ears 52 on the side of the casing 5 by means ofkey-bolts 54. While in this particular view a'specific form of attachingmeans is illustrated, it is to be under- I stood that each of these hottops is adapted to be attached by some such means to the ingot moldswith which they are intended to cooperate whenever it is desired to'permanently secure the hot tops in place during use. The foregoing typesof hot tops, each of which com rises a single hollow burned brick and ameta supporting casing, are more permanent in their characteristics thanthe lined casing hot tops of the known art for the reason thatheretofore where supporting casings or shells have been used eitherindividual separate bricks have been set in the shells or cement hasbeen plastered within the'shell to build up a cement lining. Wherebricks in of a burned brick and therefore when the 'molten steel strikesthe cement it tends to cause the same to loosen and disintegrate. In thepresent invention, with the integral burned brick, thereare no jointsfor the formation of fins and full advantage is taken of being able toburn the hollow brick outside of the shell and then "securely settingthe same in the shell, thereby providing a substantially permanentstructure adapted to withstand many pours or heats before requiringreplacement.

Having thus described my invention, I claim:

1. A hot top for ingot molds comprising a hollow burned brick comprisingan integral member, a metal supporting shell surrounding said brick andadapted to circumferentially compress said brick, said shell extendingsubstantially the full height of said brick, and means to anchor saimold.

2. A hot top for ingot molds comprising a hollow burned inte al brick, asupporting and metal shell encldsing said hollow brick, and beingadapted 'to apply compression forces circumferentially around saidbrick, means to-attach said shell to an ingot mold, and means tointerlock said brick and said shell.

3. A hot top for ingot molds comprising a hollow burned inte al. brick,asupporting and metal shell enc osing said hollow brick,

shell to an ingot 4. A hot top for ingot molds comprising an integralburned hollow brick, the exterior of said brick comprising upwardly andinwardly inclined side walls, a metallic shell having the inner sidewall surfaces adapted to form intimate contact with theexterior surfacesof said brick when said shell is telescoped over said brick, theexterior surface of said brick being provided with a recess and theexterior surface of said provided with ,a recess, and locking meanswithin the'recess in the shell and also the reclessnin the brick to locksaid brick within said s e 5. Ahot top for ingot molds comprising anintegral burned hollow brick, the exterior of shell also being 7 saidbrick comprising upwardly and inwardintimate contact with the exteriorsurfaces of said brick when said shell is telescoped over said brick,the exterior surface of said brick being provided with a recess and theexterior surface of said shell also being provided with a recess, saidbrick having side walls of substantially uniform thickness, lockingmeans-within the recess in the shell and also the recess in the brick tolock said brick within said shell, and securing means to firmly attachsaid hot top to an ingot mold.

6. A hot top for ingot molds comprising an integral hollow burned brickhaving upwardly and inwardly inclined exterior surfaces provided with acircumferential groove, a metal supporting shell adapted to fit theexterior of said brick and also provided with a circumferential grooveadapted to be positioned substantially opposite the groove in the brickwhen the brick and shell are in telescoped relation, and suitablecementing means within said grooves adapted to lock said brick withinsaid shell.

7. A hot top for ingot molds comprising a hollow integral brick liningwith the inner Wall inclined upwardly and inwardly, a metallic casingsupporting the outer wall of said lining, lockingmeans to secure the hottop to the mold, and means to retain said lining within the casing whenthe hot top is stripped from an ingot.

WILLIAM HAIG RAMAGE.

